Komatsu WA600-8, Operation & Maintenance Manual, Page: 253 / 554

Operate the air lumbar support adjustment switch to give a
proper tension to the waist part.
(a) Position for air inflation
Air is pumped in the air bag in the backrest and the air bag is
inflated.
(b) Position for air bleeding
Air is bled from the air bag in the backrest and the air bag
shrinks.
METHOD FOR ADJUSTING SUSPENSION DAMPER HARDNESS
Adjust the damping force of the suspension damper by operat-
ing the suspension damper hardness adjustment knob.
(a), (b) Low position
The suspension damper becomes softer and its damping force
is reduced.
The shock to the seat is further decreased.
(c) Recommended position
Normally, this position is recommended.
It is preset as the best position for the operator comfort.
(d), (e) High position
The suspension damper becomes harder and its damping force
is increased.
Decreases the vertical movement of the suspension.
Adjustment amount: 5 steps
METHOD FOR USING SEAT HEATER
k k
CAUTION
• Using the heater for a long time may cause low temperature burn (blister, etc.).
• Do not put heavy luggage on the cushion. Do not stick the cushion with needles, nails, etc.
• Do not put blanket, cushion, or other heat-retaining material on the seat cushion. Doing so may
cause overheat.
• If water or beverage, etc. spills on the seat cushion, wipe it off with soft cloth, etc., and dry out the
seat cushion before using it.
REMARK
The seat heater has no timer function and is not turned off automatically. Be sure to turn off the seat heater
switch after using the heater.
OPERATION MACHINE OPERATIONS AND CONTROLS
3-185